Question 909038
the standard slope-intercept form for an equation of a line is 
{{{y = highlight_green(m)x + highlight(b)}}}  where m is the slope and b the y-intercept.  
y = -3x + 1/2, P(0,1/2)  and (1, -5/2) on this line. Plot and connect
{{{drawing(300,300,   -6, 6, -6, 6, grid(1), 
circle(0, .5,0.2),
circle(1,-2.5,0.2),
graph( 300, 300, -6, 6, -6, 6,0,-3x + .5) )}}}